.ch-grid {
    padding: 0;
    list-style: none;
    display: block;
    text-align: center;
    width: 100%;
}

@media (min-width: 50em) {
    .ch-grid {
        margin: -90px 0 0 0;
    }
}

@media (max-width: 49.938em) {
    .ch-grid {
        margin: 0 0 0 0;
    }
}

.ch-grid:after,
.ch-item:before {
	content: '';
    display: table;
}

.ch-grid:after {
	clear: both;
}

.ch-grid li {
	width: 160px;
	height: 160px;
	display: inline-block;
	margin: 20px;
}